not getting gps logs.

jerjozwik · Post by **jerjozwik** » Tue Dec 24, 2013 11:14 pm

hello, im very new to this little box of tricks. im trying to capture ecu data logging runs, that parts not important. what is important is i am attempting to understand the racecapture box and figure out logging with it before i go to a track day.

so far i have the racecapture box zip-tied to my center console. it is powered by a usb coming off a laptop. i mounted the gps receiver on the passenger side window. when i start up the box i get a steady power led, but the bottom right led did not turn on. the led in the gps unit was flashing. when i read the logs the gps info is static and never moves.

ideas? im sure im missing something or skipping a step.

gizmodo · Post by **gizmodo** » Fri Dec 27, 2013 5:54 pm

Give it a while to lock onto a GPS satellite. If the lower right LED isn't flashing quickly it has not locked onto a satellite. Are you inside a garage while doing this? Do you have the antenna plugged into the correct port?

jerjozwik · Post by **jerjozwik** » Fri Dec 27, 2013 7:13 pm

outside, clear skies. gps receiver mounted to passenger window with a clear line of site. plugged into the right side telephone connector.

ok i just did it at my desk and i got a signal. maybe i miss understanding the gps view window...?

i set lat and lon to a line graph and the gps numbers are my physical location, that is correct. but the gps window just shows a red dot all the way to the top right of the window.

gizmodo · Post by **gizmodo** » Sun Dec 29, 2013 2:08 am

The GPS view window shows movement during a logging session. So, if you didn't move while logging it will just sit there.

The GPS values have quite a few decimals, so the gauge viewer may make it seem as though it isn't working. Try going for a short drive and then view the GPS log.

jerjozwik · Post by **jerjozwik** » Sun Dec 29, 2013 4:43 pm

I still have the old logs that seem to have worked capturing gps. with line graph I can see the decimals move over a 5 mile drive. but the gps view dot stays in the top right.

the help file does not seem to have any info on the subject. how are people viewing their logs on a map?

toga94m · Post by **toga94m** » Mon Dec 30, 2013 12:53 am

jerjozwik wrote:I still have the old logs that seem to have worked capturing gps. with line graph I can see the decimals move over a 5 mile drive. but the gps view dot stays in the top right.

I'm new to this too, but I'm seeing the same thing. RaceAnalyzer 1.1.14 is happy with sample logfile 'aaron.log' where all variables are logged at the same 5Hz rate, but doesn't like sample logfile 'rc_3.log' where accel is logged at 30Hz but lat/long are logged at 5Hz... Doesn't like my logfile from driving today, with accel&yaw data at 30Hz, GPS at 10Hz, and others (battery, sats) at 1Hz.

Post by **brentp** » Sat Jan 04, 2014 3:55 am

There's a bug in the latest version of RaceAnalyzer where data logged at different rates causes a problem with the GPS view. Watch for a fix on this shortly. You can also use 1.1.13 for the time being. Apologies for the inconvenience!

jerjozwik · Post by **jerjozwik** » Sat Jan 04, 2014 5:54 pm

older version works. thanks.

Post by **brentp** » Thu Jan 16, 2014 5:55 am

We'll soon be releasing a fix for RaceAnalyzer that addresses this problem. Thanks for your patience!

Hutchie · Post by **Hutchie** » Mon Mar 10, 2014 7:50 am

brentp wrote:We'll soon be releasing a fix for RaceAnalyzer that addresses this problem. Thanks for your patience!

Hi Brent,
Any further news on this yet?
Regards,
Phil.

jcordle · Post by **jcordle** » Thu Mar 27, 2014 11:06 pm

Hutchie wrote:
brentp wrote:We'll soon be releasing a fix for RaceAnalyzer that addresses this problem. Thanks for your patience!
Hi Brent,
Any further news on this yet?
Regards,
Phil.

RaceAnalyzer 1.1.15 is available.
http://www.autosportlabs.net/RaceCapturePro_Downloads

Post by **brentp** » Thu Mar 27, 2014 11:24 pm

Thanks for sharing that. If you still see problems with 1.1.15 please let us know!

ehorner · Post by **ehorner** » Tue May 13, 2014 9:10 pm

Hi Brent,

I also seem to be having problems with this (having downloaded and installed the latest software and updated firmware). Additionally, when I go to export the data to Excel, MatLab, etc, I end up with blank cells and clock value repeats if I run any channel above 30Hz, and inconsistent clock intervals no matter what frequency I run at (see attached photos). Do you have any explanation or advice for this?

Thanks,
Evan

Post by **brentp** » Tue May 13, 2014 9:51 pm

Hi Evan,

can you post the actual log files as attachments here so we can take a look at them?

Thanks,

ehorner · Post by **ehorner** » Wed May 14, 2014 2:25 pm

Sure thing Brent. Here are the .log files which I pulled off my SD card from 2 bench test files. When you import the data into Matlab or Excel, you'll see the empty cells issue I was talking about on the 30 Hz file.

What it appears to be is the RC is only writing a values per "X" given frequency. When you have data being logged at multiple frequencies (lets say 30 Hz and 10 Hz) and it goes to log both on the same time stamp, it creates 2 time stamps for each Hz of data being logged. But that's not quite right, because you would have every 3rd cell consistently getting a repeated time stamp, which it is not, and the time intervals occurring at every 0.033... seconds (for 30Hz) and every 0.1 seconds (for the 10Hz), which it is not. The combination of all of the above really gets me scratching my head in confusion.

Thanks for the quick response.
--
Evan

Autosport Labs

not getting gps logs.

not getting gps logs.

Problems with 1.1.15